Process of treating ores and carboniferous earths.



ALFRED ARTHUR LOGKWOOD, OF LONDON, ENGLANDJASSIGNOR TO THE L. 80 3. I

SYNDICATE, LIMITEE OF LONDON, ENGLAND.

TBEJ XTING- ORES AND CABBONIFEBOUS EARTES;

No Drawing.

To all whom it may concern:

Be it known that I, Annual) ARTHURLOCK- wool), chemist, a subject of the King of Great Britain, residing at 12 Minories, in the city of London, England, have invented a new and useful Process of Treating Ores and Carboniferous Earths, of which the following is a specification.

Processes are known in which ores, concentrates or the like, or earths containing carbon in any of its forms, are treated withoily liquids, and the metalliferous portion or the like recovered by magnetic separation, see the specification of U. S. Patent No. 933,717 of Sept. 7, 1909. I

It is known that an oxid when admixed with an oily liquid is when agitated with water washed out from the same.

It has been discovered that if the oily liquids (in which term are included animal, vegetable and mineral oils, creosote, fatty acids, soaps and mixtures thereof, and the like) employed for the purpose above do scribed, are made to contain minute quantities of such metallic compounds as arcinsoluble in water and in alkaline, solutions (for the purpose of rendering them less mixable or en'iulsiliahle and more adherent to and retentive of the metalliferous or carboniierous particles) that no precipitation of magnetic oxid of iron occurs when the mix-- ture is agitated with water. There results from this that a magnetic oxid can be emgloyed in the process above mentioned. such oily liquids are very adherent and in some cases (especially when slimes are present) it may be necessary to add a little acid to prevent the water from becoming sick. Oily liquids are made to acquire these qualities by treatment in general with such substances as would with a saponifiable oil form an insolublesoa-p, sulfates, sulfids, chloride,

oxids or carbonates being suitable; but when a purified mineral oil, such as kerosene 1s m question, these must be as a soluble soap or another oil or a metallic oxid.

In eneral my process consists in treating an oi y liquid, such as oil gas tar, with a metallic compound, such as sulfate of alumine, and mixing the oil thus treated with a suit-able quantity of a magnetic oxid, such as Oxid of iron, and placing these with water in a, Vessel which contains the crushed ore.

i Specification of Letters Patent. i

present in addition to the solublesalt some other substance such Patented May tfihih.

Application fifled June 26, 1909'. Serial 110,504,530.

This mixture is thoroughly agitated, the metallic oxid being prevented from depositing by the sulfate of alumina or its equivalent, and the magnetic oxidis, liquid, made to adhere to some constituent part of the ore such as the metallic constituents thereof) in preference to the others and then this mixture is transferred to a magnetic separator as described in my Patout No. 933,71? above mentioned, where the magnetic particles and the particles adhering thereto are separated from the gauges or the other constituents of the ore.

One specific way of conducting the process is as follows:-

Example'l: An oily liquid such as oil gas tar .(obtained in the manutacture of oil gas) creosote or kerosene oil is mixed with a one to five per centsolution of sulfate of alu mina in the presence of a soluble soap. The quantit' of soluble soap required is about one to re per cent. of the oil used and if an excess of alumina be used it will separate out and may be used over again. When a powdered magnetic oxid is added to theproduct, it will not be washed out when agitated with water. An ore thus treated have its constituents separated in a magnetic separator in the manner before described.

Example 2: One part of oil gas tar is mixed with two parts by weight of magnetic oxid of iron and to this mixture at small percentage of a one to five per cent. solution of sulfate of alumina is added and the whole Well mixed. This mixture may he used in the magnetic process above men-- tioned.

In my application for patent filed Nov. 15, 19.09, 528,164, I have claimed. a somewhat similar process to that herein claimed, but in the process claimed in said applica tion the oiled particles are separated from the unoiled particles by a flotation process.

What I claim is: v

The process of treating ores hereinbefore described, which consists in adding to an oily liquid a substance which renders it more adherent to the ore and which prevents the washing out of an oxid, and mixing such oily liquid with an ore and a magnetic oxid to cause the magnetic oxid to adhere to some constituent part of the ore in prefer ence to the others, and then magnetically separating the mixture.

2. in a process of'treating ores, comby the oily bining an oily liquid with a substance which agitating the oily liquid thus treated with renders it more adherent to the ore and less an ore, a magnetic mud and water, and then 1':

emulsifiable, and agitatin inch oily liquid magnetlcally separating the mixture.

with an ore, magnetic oxic 0 iron and water,

and then separating the mixture. ALFRED ARTHLR LOCKWOOD' 3. In a process of treating ores, mixing Witnesses: an oily liquid with sulfate of alumina to JOHN ALFRED DuNNlSoN, prevent the Washing outof an oxid, and 1 F. OWEN. 

